Improvement in nozzles for hose-pipes, hydrants



2 Sheets Sheei 1.

Hydrants, 8L0? Patented Nov. 19,1872.

JM (0. Mutt.

. 0. ENDICOTT. Improvement in Nozzles for Hose-Pipes,

2 Sheets--Sheet 2.

l. 0. END ICOTT. I Improvement in Nozzles for Hose-Pipes, Hydrants, 8w.

Patented Nov. 19,1872.

A lg i I!!! E ISRAEL 0. ENDIGOTT, OF MANCHESTER, NEW HAMPSHIRE.

IMPROVEMENT IN NOZZLES FOR HOSE-PIPES, HYDRANTS, etc.

Specification forming part of Letters Patent No. 133,215, dated November19, 1872.

- construction of a nozzle-pipe (to be used in connection with the hoseof steam fire-engines) with reference to the arrangement within the pipeof a valve, so constructed and applied that it is opened and shut byrotative movement of v the nozzle, to permit discharge of water throughthe nozzle to be arrested at the nozzle instead of only at the engine,or as well as at the engine.

In my invention I form the nozzle-chamber with an enlargement, sphericalor approximately spherical in shape, and containing an inner case orshell, in which is a ball-valve hung on trunnions, the valve having acylindrical water-passage extending diametrically through it, (of thesize of the nozzle-bore above and below it,) which passage is in linewith the nozzle-passage when the valve is open, and forms part of saidpassage, the valve also having a spherical'valve-face, which, as thevalve is turned to shut off the discharge of water, slides under aconcave seat at the opposite end of the valve-chamber, thereby cuttingofi all passage of water through the nozzle, the pressure of the watertending to force the valve upon its seat and keep it tight. In the outersurface of the valve is a cam-slot or groove, into which a pin entersfrom the valve-case, and by turning the nozzle the movement of this pinturns the valve and opens or closes the water-passage through thenozzle. It is in this globular or globularfaced valve, having thewater-passage extending. through it, and operated as described, that myinvention primarily consists.

The drawing represents a nozzle embodying my invention. A shows thenozzle in sectional elevation. B is a plan of the valve and valveshell.0 is a section through the closed valve. D is a side elevation.

a denotes the nozzle-pipe, nut-threaded at its lower end I) to couple tothe hose-pipe, and having the eduction-tube c at its upper end. Belowthis tube is the valve-case, made in two hemispherical parts, d e,united by a screwconnection, as seen at f. In the lower half 0 is ashell, 9, having a neck, It, uniting it to the end I) of thenozzle-pipe, the valve-case piece 6, and the part d, and its tube 0,turning on this neck, the connection being watertight, but permittingfree relative rotative movement. From opposite sides of the shell 9extend two trunnions or pins, 2', upon which is hungthe globular valveis, the valve turning freely upon these trunnion-pins, with a slightspace between its surface and the shell. Through the valve extends theaxial waterpassage or, opening into the passage 1 above it and thepassage m below it, when the valve is opened, as seen at A, the passage00 being then vertical. Over the valve, at the bottom of the tube 1, isa valve-seat, 12, against which the globular surface of the valve fitssnugly when the valve is closed, as seen at G. In

the outer surface of the valve is made the cam-slot 0, into which slot apin, p, extends, said pin being a projection from the valvecase cl. Whenthe nozzle is turned, a piece, q, through which the pin passes, travelsbetween two stops, 'r s, and the movement of the pin in the slot 0causes the valve to turn; so that by turning the nozzle to carry thepiece q up to the stop 1- the valve is opened, and by turning it backand carrying the piece q up to the stop 8 the valve is closed. Toprevent leakage between the valve-shell and neck and the case 6 a groundor turned joint is made between the case and shell at t, the twosurfaces exactly fitting and forming a joint impervious to passage ofwater, the pressure of the water tightening the joint. The valve issupported loosely on its trunnions, and has a capability of play, sothat the pressure of the water, when the valve is closed, forces thevalve against its seat, the valve and seat forming an imperviouswaterjoint.

The construction is simple and efficient, and enables the stream ofissuing water to be easily andinstantaneously cut off at the nozzle andwithout recourse to the engineer who drives the engine-a suitablerelief-valve being preff erably used at the engine, which valve auto-vmatically operates by the back pressure of the water.

I claim- 7 1. In combination with the ball-valve the cam-slot 0 and thepin 1), operating to turn the valve substantially as described. 2. Anozzle or nozzle-pipe having the ballvalve, which valve has the axialwater-passage w, and is operated to permit or to out off discharge ofWater through the nozzle by means of a pin entering a slot in the ball,substantially as described.

3. In combination with the ball-valve, the

trunnions i, projecting inward from the shell and into the ball, forsupporting the valve, substantially as shown and described.

4. In combination with the Valve, the shell g, in which the ball is hungand turns, substantially as described.

5. The shell 9 and the ring 0, constructed and arranged to form theimpervious joint t, substantially as shown and described.

ISRAEL 0. ENDICOTT.

Witnesses:

N. S. BEAN, D. W. Monsn.

